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Finding the Fourth Proportional to 134,431.44, 185,509 and 74,000.82

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Solution

The fourth proportional to 134,431.44, 185,509 and 74,000.82 is: 102,117.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,431.44 : 185,509 = 74,000.82 : x
  2. Step 2: Convert to fraction form
    134,431.44/185,509 = 74,000.82/x
  3. Step 3: Cross multiply
    134,431.44x = 185,509 × 74,000.82
  4. Step 4: Simplify right side
    134,431.44x = 13,727,818,117.38
  5. Step 5: Solve for x
    x = 13,727,818,117.38/134,431.44
  6. Step 6: Final answer
    x = 102,117.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.